Door-lock.



J. SGHMITTBERGBR.

DOOR LOCK.

APPLICATION FILED SEPT. 19, 1911.

1,036,346.. Patented Aug. 20, 1912.

- To all whom it may conce-rn JOSEPHkSCHMITTBERGER, OFlWEST HOBOKEN',NEW JESEY.

DOOR-LOCK.

ASpeci-eation of Letters Patent.

Patented Aug; 20, 1912.

:Applicaton iledvseptember; 19;,1911. Serial No.,650,075.

Be it known thatl, JOSEPH-*Sonnin- BERGER, a citizen of the UnitedStates, and residing at West Hoboken,. in` thecounty of Hudson andlState of NewJersey.have in-Z vented certain new and .useful11m-provements in Door-Locks, ofwhich the follow ing is a specification,such as will enable those skilled inthe art -to which it appei tains to.make and-usev thesaine. This invention -relates to door locksg and theobjectthe'reo'f` is to provide an -improved device of this class inIwhichthe ordinary latch bolt-operated by the door knob and the ordinarylock bolt operatedby a key are omitted, and in which is employed a spurwheel which operates in connectionl with a slotted strike plate securedto the door frame and which operates bothfor the purpose of latching thedooraml locking it. zt0gether with .knob and spring-operated devices,for securing saidv spur wheel against rotation when the door islatched, simply; and akeyoperated bell crank lever forfsecuring-saidwheel against rotation when-,the door is locked. l

, The invention is fully disclosed in the foll' lowing specification, ofwhich'E-thec-acnompany-ing drawing` forms.- part, in which the separateparts` of .my 4improvement earegdesignated bysuitable,reference'fcharaeters in each of the` views, and inwhich provedlock secured in indoor, one side of the lock casing being removedandpart of the and Fig. A8. aiacey viewyof a:,\stri ke fplate .which Iemploy.

' .In the ,drawing forming part Aof this speciL i5@ ication Ifhavefshownat a part of a door and lat B a part of adoor fraineprovided with theusual ,moldinglfst-rip C against en `:,closed, and. se-

which the door strikes' w cured.l to-the doorframe B is'aistrike plate dwhichis shown detached in Fig. 8 and which fis preferably. provided atoneside edge with l an extension Z2 in which are-formed parallel lslots'd3 which range longitudinallyof the plate al and extend intotheaniiddle portion thereof aselearly-shown.

In the practice ofzmy invention I provide a lock casing a having afa'ceplate a2, and said lockcasing and face plate are countersunk i ormortised into the door in the usual mannei', the ,casing a being securedto the face plate. a2; at a3, and the face plate a2 being also providedwith. a transverse aperture ai"L through which pass the teeth of' alspur wheel c` rotatably connected at egon a plate ofthe .face-platea2.'

e3'or vother support secured to the inner side I have also shown at ftheordinary knob shaftwith which, in

practice, the inner and outer door knobs are connected in the vusualmanner, said knobs being not shown7 and this shaft is angularincross-section and mounted thereon within the-lock casing a 1s a sleeveg having later# ally directed fingers g2, said shaft and'sleeve being ofthe usual form.

Between the knob'shaft f and the face -plate a2- a-re. mountedtwoparallel guide ,blocks h and z' and the upper guide block 'iisgshowndetached in Fig. 7 and is provided with a projection 2 and saidguide blocks fare riveted to;t he side a5. of the lockcasing,l andbetween saidguide block is a bed -plate h3 lwhich is also .riveted tothe side a5 of the lockcasing,v and movable between the .blocks h and i,andresting on the bed plate h3, is a bolt c provided with a centrallongitudinal' slot or opening [c2 and the inner end of which is formedinto a yoke-shaped head ,7c3l having outwardly directed hook members.7a4. in connectionwith which the the bolt 7c inwardly, 'and .the bolt 7cis pro- ;vided at its youter or front endv .with a projecting nose pieceh5 which is beveled ton, ione side and which bperatesnn connection lwith theispur wheel e or the te'eth.thereof.-`

rWithin the central longitudinal slot la? of the bolt k is placeda'gspiral spring k6 one end ofvwhichA isfsecui'ed-I-to' the bolt k? andthe other end .to a :pin los; secured in the bed v plate IL?. :andthefside a5 pf the lock casing. Below tlieguide. block h are parallelguide ;bars m and m2 whichare also secured to the side a5 of the lockcasing and -between which is= mounted a longitudinally movable lock=-bar nprovided in its fron-t endporti-on' withal longitudinal slot n2,and in its bottom rear fedge portion with a recess n3, and centrally ofits inner side with a projecting lug n4, and mounted o n thecasing is abell crank lever 0 thearm 02 of which overlaps `the bar nwand isprovided with a recess o3 which corresponds withv and is adapted toreceive the lug n4, and secured to the plate a5 of the lock casing is apin 04 which passes through the slot n2 in the bar n and through a holeo5 in theangle of the bell crank lever o.

The arm 06 of the bell crank lever ranges vertically when in its normalposition land parallel with the4 face plate a2" of the lock casing, andsaid arm passes backof the nose piece lo of the b'olt c, and back of theeX'- tension 2 of the guidel block c', and secured to the arm o6 1s asplral spring 07 which 1s alsosecured. to a stud o8 secured to the sideplate ai of the lockr casing. -The side a? of the lock casing isdetachably secured in' position by a screw p passed therethrough andinto the stud o8, and said side a7 is provided with a hole p2 throughwhich the knob shaft f passes and in which one end of the sleeve g has abearing, the `other end of said sleeve having'a bearing in the sideplate a of the lock casing, and at the opposite sides of the hole p2 aresecured parallel blocks p3 on which the side members ofthe yoke-shapedhead k2 of thebolt bear. The

side a7' is also provided at right angles to the blocks p3 with a block1 which is shown in longitudinal section in Fig. 3 and which forms aguide or bearing for the arm 02 of the bell crank lever o, and which'also serves to hold the bar a imposition between the vguide bars maandm2, and said 'side a7 is also provided with a guide block s which bearson the nose piece c5 of the bolt la.

The operation will be readilyundcrstood from the foregoing description,when taken in connection with the accompanying drawing and the followingstatement thereof. It vwilly-be seen that the side plates 0,5 and a? ofthe lock casing are cutout at t to provide room for the spur wheel e asis also the faceplate a2 of the lock casing, and sup# pose the door tovbe closed as shown in Fig. 2,

all that is 'necessary is to turn the shaft f and pull or shove the dooroutwardly. This operation withdraws the bolt 7c and its nose piece fromthe teeth of the wheel e and allows said wheel to` turn, and after thisoperation is performed and the knob released, the spring los forces thebolt k back into the position shown in Fig. 2 and the door may be closedby simply swinging it into the closed position, in which operation theteeth of the wheel e catch' in t-he`y slots d'of the strike plate androtate said wheel, and at thesame time other teeth of 'said wheel strikethe beveled side of the nose piece 765 "of .thel bolt and successivelyforces operation of closing. the door mayvbeperformed by means of one ofthe knobs on the atm in Fig. 1 and holds the said arm in the raisedposition shown in dotted lines in said ligure, and this operation forcesthe arm 06 of said bell crank lever outwardly as shown in dottedlines'in Fig.' l and causes it to engage the teeth .of the wheel el andprevent its rotation, and this locks the door 'as Will be readilyunderstood. In order .to unlock .the door, Y the'` key is turned in thereverse direction. This operation forces the bar n inwardly and4w1thdraws the lug h4 from the .position shown at in v Fig. l back intothe position shown in'full tion shown in full lines in said figure andthe door is unlocked. The free end port-ion of the arm -o6 of the bellcrank lever 0 is ofset from the plane ofthe arm 02 as v clearly shown inFig. 5, and is provided in the back thereof with -a beveled recess 09 sothat it will enter the space between the teeth of the wheel e.

From the foregoing description it will loe-l seen thatthe wheel eoperates both asa means for latching and a means for lock# ing the door,and while I have shown the strike plate d as secured to the iframe itwill be understood that said strike plate maybe countersunkV in saidframe if desired, and other changes in and modifications of my improvedlck mechanism may be made,- within the *scope of the appended claims,

without departing from the spirit of my inl` vention or sacrificing itsadvantages. y

*Although I have described my improvement as a door lock, it will beapparent that the same may be used in connection with other stationaryand swinging members or devices.l Y

Having fully described my invention, what I claim as new. and desireLetters Patent, isz-l f nl. In a lock of the class described, a slottedstrike plate. adapted to be secured to a stationary member and a lockcasing adapted to be secured in a Swingin O having a knob-operated safbt which passes therethrough and through said swinging member, saidlock casing being provided with a rotatable spur wheel the teeth of`which are adapted to lengage said strike plate, and a spuug-operatedbolt having a to secure by ila `member and 90 lines in said figure, atwhich time the spring 07 forces the bell crank levero into the posi-vbeveled nose Aadapted to engage said spur wheel, said bolt being adaptedto be moved out of engagement with the spur Wheel by turning theknobshaft, and said casing being also provided with a locking cranklever .adapted to be operated in one direction by a key so as to locksaid spur wheel against rotation, anda spring for throwing said cranklever out of' engagement with said wheel.

2. In a lock of the class described, a casing provided with a face platehaving a transverse slot formed therein, a' spurwheel mounted on theinner side of said face plate and the teeth of which pass through 'saidslot, a sliding spring-operated 'latch bolt adapted to engage said spurwheel, and a knob shaft for moving said latch bolt out of engagementwith said wheel, said casing being also provided with a locking cranklever operated in one direct-ion lby `a key and adapted to engage saidwheel, and in the opposite direct-ion by a spring.

3. In a lock of the class described, a casing having a face plateprovided with a transverse slot, a spur wheel mounted inwardly of saidface plate and the teeth of which project through said slot, a'slidablymounted latch bolt adapted to engage said spur wheel, a spring forthrowing said bolt into operative engagement with said wheel, a knobshaft for throwing said bolt out of engagement with said wheel, asliding bar mounted below and parallel with the latch bolt and adaptedto be operated by a key, a locking crank lever mounted on said bar andone arm of which is adapted to engage said wheel/and to be operated`by akey when the sliding bar is operated, and a spring for moving thelocking cranky lever out of engagement with said wheel when the bar ismoved in the opposite direction by the key.

4. In a lock, a casing having a face plate provided with a transverseslot, a spur wheel mounted inwardly of the face plate and the teeth ofwhich extend through said slot, 'a horizontally movable latch boltmounted in said casing and tensionally'held in engagement with saidwheel, a knob shaft passing through said-casing and means whereby theturning vof said'shaft will throw said bolt out of connection with saidwheel, and a key operated lever also adapted to engage said wheel. A

5. In a lock of the class described, a strike plate adapted to vbesecured to a swinging member and havingy a horizontal row of ver--tically arranged slots, a casing adapted to be secured to a swingingmembery and having a face plate provided with a transverse slot, aspur-wheel mounted inwardly of the face plate and the teeth of whichextend through the slot therein, a horizontally movable latch boltmounted in said casing and tension'a-lly held in engagement with saidwheel, a knobshaft passing through said caslng, means wherebv theturning of said shaft will throw said bolt out of connection with saidwheel and a key operated lever also adapted to engage said wheel. A

Intestim ony -that presence of the subscribing witnesses this 18th dayof September 191 I claim the foregoing as my invent-ion I have signed myname 1nV JOSEPHSCHMITTBERGER.' I

Witnesses:

C. E. MULREANY, FRANKL G. AT LEE.

